プログラミング de 落描き – ページ 694 – クリエイティブ・コーディングによる生成物とソース

2019年10月27日

Near points. openFrameworks

[ Video ]

[ About ]
文字に上にポイントを置いて、近づいたら線を引く。

Near points on characters.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void mouseEntered(int x, int y) {};
	void mouseExited(int x, int y) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	ofMesh mesh, draw_mesh;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void mouseEntered(int x, int y) {};

void mouseExited(int x, int y) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofMesh mesh, draw_mesh;

};

#include "ofApp.h"	

//--------------------------------------------------------------
void ofApp::setup() {

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofSetLineWidth(2);

	this->mesh.setMode(OF_PRIMITIVE_LINES);

	ofFbo fbo;
	fbo.allocate(ofGetWidth(), ofGetHeight());
	fbo.begin();
	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);
	ofClear(0);
	ofSetColor(0);

	ofTrueTypeFont font;
	font.loadFont("fonts/Kazesawa-Bold.ttf", 320, true, true, true);

	font.drawString("NE", font.stringWidth("NE") * -0.5, font.stringHeight("NE") * -0.05);
	font.drawString("AR", font.stringWidth("AR") * -0.5, font.stringHeight("AR") * 1.05);

	fbo.end();

	auto span = 15;

	ofPixels pixels;
	fbo.readToPixels(pixels);
	for (int x = 0; x < fbo.getWidth(); x += span) {

		for (int y = 0; y < fbo.getHeight(); y += span) {

			ofColor color = pixels.getColor(x, y);
			if (color != ofColor(0, 0)) {

				this->mesh.addVertex(glm::vec3(x, y, 0));
			}
		}
	}

	ofSetColor(39);
}

//--------------------------------------------------------------
void ofApp::update() {

	ofSeedRandom(39);

	this->draw_mesh = this->mesh;

	for (auto& vertex : this->draw_mesh.getVertices()) {

		vertex.x += ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -5, 5);
		vertex.y += ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -5, 5);
	}

	for (int i = 0; i < this->draw_mesh.getVertices().size(); i++) {

		auto location = this->draw_mesh.getVertex(i);
		vector<int> near_index_list;
		for (int k = 0; k < this->draw_mesh.getVertices().size(); k++) {

			if (i == k) { continue; }

			auto other = this->draw_mesh.getVertex(k);
			auto distance = glm::distance(location, other);
			if (distance < 16.5) {

				this->draw_mesh.addIndex(i);
				this->draw_mesh.addIndex(k);
			}
		}
	}
}

//--------------------------------------------------------------
void ofApp::draw() {

	this->draw_mesh.draw();

	for (int i = 0; i < this->draw_mesh.getVertices().size(); i++) {

		ofDrawCircle(this->draw_mesh.getVertex(i), 3);
	}
}

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetLineWidth(2);

this->mesh.setMode(OF_PRIMITIVE_LINES);

ofFbo fbo;

fbo.allocate(ofGetWidth(), ofGetHeight());

fbo.begin();

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

ofClear(0);

ofSetColor(0);

ofTrueTypeFont font;

font.loadFont("fonts/Kazesawa-Bold.ttf", 320, true, true, true);

font.drawString("NE", font.stringWidth("NE") * -0.5, font.stringHeight("NE") * -0.05);

font.drawString("AR", font.stringWidth("AR") * -0.5, font.stringHeight("AR") * 1.05);

fbo.end();

auto span = 15;

ofPixels pixels;

fbo.readToPixels(pixels);

for (int x = 0; x < fbo.getWidth(); x += span) {

for (int y = 0; y < fbo.getHeight(); y += span) {

ofColor color = pixels.getColor(x, y);

if (color != ofColor(0, 0)) {

this->mesh.addVertex(glm::vec3(x, y, 0));

}

ofSetColor(39);

}

//--------------------------------------------------------------

void ofApp::update() {

ofSeedRandom(39);

this->draw_mesh = this->mesh;

for (auto& vertex : this->draw_mesh.getVertices()) {

vertex.x += ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -5, 5);

vertex.y += ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -5, 5);

}

for (int i = 0; i < this->draw_mesh.getVertices().size(); i++) {

auto location = this->draw_mesh.getVertex(i);

vector<int> near_index_list;

for (int k = 0; k < this->draw_mesh.getVertices().size(); k++) {

if (i == k) { continue; }

auto other = this->draw_mesh.getVertex(k);

auto distance = glm::distance(location, other);

if (distance < 16.5) {

this->draw_mesh.addIndex(i);

this->draw_mesh.addIndex(k);

}

//--------------------------------------------------------------

void ofApp::draw() {

this->draw_mesh.draw();

for (int i = 0; i < this->draw_mesh.getVertices().size(); i++) {

ofDrawCircle(this->draw_mesh.getVertex(i), 3);

}

//--------------------------------------------------------------

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191027

2019年10月26日

Hexagon walls. openFrameworks

[ Video ]

[ About ]
ヘキサゴンの壁。

Hexagon walls.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void mouseEntered(int x, int y) {};
	void mouseExited(int x, int y) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	ofEasyCam cam;
	vector<ofMesh> mesh_list;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void mouseEntered(int x, int y) {};

void mouseExited(int x, int y) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofEasyCam cam;

vector<ofMesh> mesh_list;

};

#include "ofApp.h"	

//--------------------------------------------------------------
void ofApp::setup() {

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofSetLineWidth(3);
	ofEnableDepthTest();
}

//--------------------------------------------------------------
void ofApp::update() {

	ofSeedRandom(39);
	this->mesh_list.clear();

	auto radius = 300;
	auto deg_start = 0;

	for (auto radius = 50; radius < 350; radius += 25) {

		ofMesh mesh;

		for (auto deg = deg_start; deg < deg_start + 360; deg += 60) {

			auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
			auto noise_location = glm::vec2(100 * cos(deg * DEG_TO_RAD), 100 * sin(deg * DEG_TO_RAD));
			mesh.addVertex(glm::vec3(location, 0));
			mesh.addVertex(glm::vec3(location, 50 + 100 * ofNoise(noise_location.x * 0.003, noise_location.y * 0.003, radius * 0.005 + ofGetFrameNum() * 0.01)));
		}

		for (auto i = 0; i < mesh.getVertices().size(); i++) {

			mesh.addIndex(i);
			mesh.addIndex((i + 1) % mesh.getVertices().size());
			mesh.addIndex((i + 2) % mesh.getVertices().size());
		}

		this->mesh_list.push_back(mesh);
	}
}

//--------------------------------------------------------------
void ofApp::draw() {

	this->cam.begin();

	for (auto& mesh : this->mesh_list) {

		ofSetColor(239);
		mesh.draw();

		ofNoFill();
		ofSetColor(39);
		for (auto i = 0; i < mesh.getVertices().size(); i += 2) {

			ofBeginShape();
			ofVertex(mesh.getVertex(i));
			ofVertex(mesh.getVertex((i + 1) % mesh.getVertices().size()));
			ofVertex(mesh.getVertex((i + 3) % mesh.getVertices().size()));
			ofVertex(mesh.getVertex((i + 2) % mesh.getVertices().size()));
			ofEndShape(true);
		}
	}

	this->cam.end();
}

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetLineWidth(3);

ofEnableDepthTest();

}

//--------------------------------------------------------------

void ofApp::update() {

ofSeedRandom(39);

this->mesh_list.clear();

auto radius = 300;

auto deg_start = 0;

for (auto radius = 50; radius < 350; radius += 25) {

ofMesh mesh;

for (auto deg = deg_start; deg < deg_start + 360; deg += 60) {

auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

auto noise_location = glm::vec2(100 * cos(deg * DEG_TO_RAD), 100 * sin(deg * DEG_TO_RAD));

mesh.addVertex(glm::vec3(location, 0));

mesh.addVertex(glm::vec3(location, 50 + 100 * ofNoise(noise_location.x * 0.003, noise_location.y * 0.003, radius * 0.005 + ofGetFrameNum() * 0.01)));

}

for (auto i = 0; i < mesh.getVertices().size(); i++) {

mesh.addIndex(i);

mesh.addIndex((i + 1) % mesh.getVertices().size());

mesh.addIndex((i + 2) % mesh.getVertices().size());

}

this->mesh_list.push_back(mesh);

}

//--------------------------------------------------------------

void ofApp::draw() {

this->cam.begin();

for (auto& mesh : this->mesh_list) {

ofSetColor(239);

mesh.draw();

ofNoFill();

ofSetColor(39);

for (auto i = 0; i < mesh.getVertices().size(); i += 2) {

ofBeginShape();

ofVertex(mesh.getVertex(i));

ofVertex(mesh.getVertex((i + 1) % mesh.getVertices().size()));

ofVertex(mesh.getVertex((i + 3) % mesh.getVertices().size()));

ofVertex(mesh.getVertex((i + 2) % mesh.getVertices().size()));

ofEndShape(true);

}

this->cam.end();

}

//--------------------------------------------------------------

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191026

2019年10月25日2019年10月24日

Lines on torus. openFrameworks

[ Video ]

[ About ]
トーラス上のポイントを線で結ぶ。

Lines on torus.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void mouseEntered(int x, int y) {};
	void mouseExited(int x, int y) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	glm::vec3 make_point(float R, float r, float u, float v);

	ofEasyCam cam;
	ofMesh mesh;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void mouseEntered(int x, int y) {};

void mouseExited(int x, int y) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

glm::vec3 make_point(float R, float r, float u, float v);

ofEasyCam cam;

ofMesh mesh;

};

#include "ofApp.h"	

//--------------------------------------------------------------
void ofApp::setup() {

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	ofSetLineWidth(1.5);
	ofEnableDepthTest();
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

	this->mesh.setMode(OF_PRIMITIVE_LINES);
}

//--------------------------------------------------------------
void ofApp::update() {

	ofSeedRandom(39);
	this->mesh.clear();

	float R = 300;
	float r = 100;
	ofColor color;
	for (int i = 0; i < 800; i++) {

		float u = ofRandom(0, 360) + ofGetFrameNum() * ofRandom(0.5, 1);
		float v = ofRandom(0, 360);
		auto location = this->make_point(R, r, u, v);

		color.setHsb(ofRandom(255), 200, 255);

		this->mesh.addVertex(location);
		this->mesh.addColor(color);
	}

	for (int i = 0; i < this->mesh.getVertices().size(); i++) {

		auto location = this->mesh.getVertex(i);
		vector<int> near_index_list;
		for (int k = 0; k < this->mesh.getVertices().size(); k++) {

			if (i == k) { continue; }

			auto other = this->mesh.getVertex(k);
			auto distance = glm::distance(location, other);
			if (distance < 50) {

				this->mesh.addIndex(i);
				this->mesh.addIndex(k);
			}
		}
	}
}

//--------------------------------------------------------------
void ofApp::draw() {

	this->cam.begin();

	for (int i = 0; i < this->mesh.getVertices().size(); i++) {

		ofSetColor(this->mesh.getColor(i));
		ofDrawSphere(this->mesh.getVertex(i), 3.5);
	}
	this->mesh.draw();

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

	// 数学デッサン教室 描いて楽しむ数学たち　P.31

	u *= DEG_TO_RAD;
	v *= DEG_TO_RAD;

	auto x = (R + r * cos(u)) * cos(v);
	auto y = (R + r * cos(u)) * sin(v);
	auto z = r * sin(u);

	return glm::vec3(x, y, z);
}

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(1.5);

ofEnableDepthTest();

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

this->mesh.setMode(OF_PRIMITIVE_LINES);

}

//--------------------------------------------------------------

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

float R = 300;

float r = 100;

ofColor color;

for (int i = 0; i < 800; i++) {

float u = ofRandom(0, 360) + ofGetFrameNum() * ofRandom(0.5, 1);

float v = ofRandom(0, 360);

auto location = this->make_point(R, r, u, v);

color.setHsb(ofRandom(255), 200, 255);

this->mesh.addVertex(location);

this->mesh.addColor(color);

}

for (int i = 0; i < this->mesh.getVertices().size(); i++) {

auto location = this->mesh.getVertex(i);

vector<int> near_index_list;

for (int k = 0; k < this->mesh.getVertices().size(); k++) {

if (i == k) { continue; }

auto other = this->mesh.getVertex(k);

auto distance = glm::distance(location, other);

if (distance < 50) {

this->mesh.addIndex(i);

this->mesh.addIndex(k);

}

//--------------------------------------------------------------

void ofApp::draw() {

this->cam.begin();

for (int i = 0; i < this->mesh.getVertices().size(); i++) {

ofSetColor(this->mesh.getColor(i));

ofDrawSphere(this->mesh.getVertex(i), 3.5);

}

this->mesh.draw();

this->cam.end();

}

//--------------------------------------------------------------

glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

// 数学デッサン教室描いて楽しむ数学たち　P.31

u *= DEG_TO_RAD;

v *= DEG_TO_RAD;

auto x = (R + r * cos(u)) * cos(v);

auto y = (R + r * cos(u)) * sin(v);

auto z = r * sin(u);

return glm::vec3(x, y, z);

}

//--------------------------------------------------------------

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191025

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